- RePEc:cfs:cfswop:wp200505
- RePEc:col:000138:001086
- RePEc:iae:iaewps:wp2005n10
- RePEc:iza:izadps:dp1671
- RePEc:nbr:nberwo:11488
- RePEc:sal:celpdp:91
- RePEc:wpa:wuwpdc:0507004
- RePEc:wpa:wuwpeh:0507001
- RePEc:wpa:wuwpem:0507003
- RePEc:wpa:wuwpge:0507009
- RePEc:wpa:wuwpla:0507007
- RePEc:wpa:wuwppe:0507009
- RePEc:hal:papers:halshs-00004052_v1